SMVA1705-004LF

Overview

The SMVA1705-004LF is a silicon hyperabrupt junction tuning varactor diode designed for automotive applications. It features a common cathode configuration in an SOT-23 package with a series inductance of 1.4 nH. Key electrical specifications include a maximum reverse voltage of 12 V, a forward current rating of 20 mA, and a power dissipation limit of 250 mW. At 1 MHz, the capacitance ranges from 6.1 pF at 4 V to 18.3 pF at 1 V, yielding a typical capacitance ratio of 3.0. The device operates within a temperature range of -55°C to +125°C.

Feature Summary

• AEC-Q101 qualified for automotive reliability
• Low series resistance for efficient tuning
• High capacitance ratio for wide frequency coverage
• SOT-23 package compatible with standard reflow processes

Applications

• In-vehicle infotainment systems
• Navigation equipment
• Telematics modules
• Garage door openers
• Wireless control systems

Procurement Notes

Verify component authenticity through authorized Skyworks distributors or direct channels. Confirm AEC-Q101 qualification status and RoHS compliance via the manufacturer's Certificate of Conformance. Ensure handling procedures adhere to ESD protection standards, specifically Class 1C HBM and Class 3 CDM ratings, to prevent device damage during assembly and testing.

Selection Notes

Select this component for designs requiring hyperabrupt junction characteristics in compact SOT-23 footprints. Verify that the 12 V reverse voltage rating aligns with the circuit's maximum bias requirements. Consider the 1.4 nH series inductance when designing high-frequency matching networks. Ensure thermal management supports the 250 mW power dissipation limit within the specified operating temperature range.

Part Context

This part belongs to Skyworks' automotive-grade varactor diode portfolio, distinguished by its AEC-Q101 qualification. It utilizes a hyperabrupt junction profile to maximize capacitance variation per volt compared to abrupt junction alternatives. The common cathode dual-diode structure allows for balanced tuning configurations in differential circuits.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative Skyworks varactors based on capacitance ratios, package compatibility, and AEC-Q101 qualification if replacement is necessary.

FAQ

What is the typical capacitance ratio (CTR) for the SMVA1705-004LF?

The typical capacitance ratio is 3.0, measured as the ratio of capacitance at 1 V to capacitance at 4 V.

What are the electrostatic discharge (ESD) ratings for this device?

The device is rated for Human Body Model (HBM) Class 1C (1000 V), Charged Device Model (CDM) Class 3 (1000 V), and Machine Model (MM) Class A (200 V).

Is the SMVA1705-004LF suitable for lead-free soldering?

Yes, the component is rated to Moisture Sensitivity Level 1 (MSL1) at 260 °C, making it compatible with both lead and lead-free soldering processes.